Burning a copy wii game from a copy...

I had the zelda game for the wii but unfortunately it has just recently got damage i did manage to burn a back up disc which works fine in my upgraded Wii. The only problem is, is that i have tried to 'back up my backup' and for some reason it's not working.
does anyone know of a software that i could use to burn a copy of my copy? i have tried Nero but it doesn't wat to know.

if anyone could help i would be most greatful.

thanks in advance.